Mold for the manufacture of lined shoes by casting



NOV. 24, 1970 J BAUDQU 3,541,646

MOLD FOR THE MANUFACTURE OF LINED SHOES BYCASTING Filed July 11, 19 8 2Sheets-Sheet 1 E i-l Nov. 24, 1970 A. J. G. BAUDOU 3,541,546

MOLD FOR THE MANUFACTURE OF LINED SHOES BY CASTING 2 Sheets-Sheet 2Filed July 11, 1968 United States Patent 3,541,646 MOLD FOR THEMANUFACTURE OF LINED SHOES BY CASTING Antoine Joseph Georges Baudou, LesEqlisottes 33, France Filed July 11, 1968, Ser. No. 744,164 Claimspriority, application France, July 12, 1967,

14,152 Int. Cl. B29d 31/00; B291? 1/10 US. Cl. 18-42 10 Claims ABSTRACTOF THE DISCLOSURE BRIEF SUMMARY OF THE INVENTION The present inventionrelates to a mold for casting shoes, particularly ski boots, of the typeincluding a lining -and an opening in the upper for the introduction ofthe foot, and flap portions at said opening which fold back one upon theother in order to close the boot, with the aid of buckles, laces or anyother suitable means.

The invention consists essentially of a mold in which a lining is to bedirectly fastened to the body of the boot, at the time of the casting,said lining having in its front part, a cut-out corresponding to theopening of the upper, and, during the operation of casting, in keepingin place in the mold, the edge portions of such cut-out by means of arigid flange of suitable shape carried by a half-shell of the mold andinserted between the above-mentioned edge portions.

The invention is also directed to the construction of the mold, as wellas to the ski boots or other shoes which are lined with the aid of thismold.

BRIEF DESCRIPTION OF THE DRAWING FIG. 1 is a sectional view through amold according to the invention, in open position, at the level of thearch of the foot,

FIG. 2 is a sectional view of the mold of FIG. 1 in closed position, and

FIG. 3 is a perspective view of the lining.

DETAILED DESCRIPTION In FIGS. 1 and 2 there is shown a mold in which ashoe can be cast, such shoe being of the type having an opening in whichthe foot is inserted, and flap portions bounding the opening, one ofwhich is overlapped on the other and secured thereto to close the shoe.

The mold comprises an upper half shell 1 with a concave hollow contourcorresponding to the shape of one half of the shoe upper, a lower halfshell 2 similar to half-shell 1 and to be described in greater detailhereinafter, and a form 3 which has the general shape of the inside ofthe shoe and which receives a lining 5 onto which is to be cast theouter material of the shoe.

In the molded finished shoe, a flap part of one half of the upper ininserted under an adjacent flap part of the other half of the upper inorder to close the shoe. In order to be able to cast a shoe of thisconstruction, the lower half shell 2 includes a flange 6 which extendsalong the entire length of the flap of the upper which is to be foldedover when the shoe is closed. The flange 6 is located along the edge ofthe half shell 2 and conforms to the opening in the upper of the shoe.

The mold further comprises a sole block 11 which cooperates with theform 3 to produce the sole of the shoe in a manner to be describedlater.

The lining S has an elongated cut-out 4 at its front part and edgeportions 7, 8 which bound cut-out 4. The cut-out corresponds to theopening of the shoe in which the users foot is inserted, and the edgeportions correspond to the flap portions of the shoe, edge portion 7corresponding to the flap portion to be inserted beneath the flapportion corresponding to edge portion 8.

The casting of the shoe is effected in the following manner.

The mold is opened as shown in FIG. 1 wherein form 3 is separated fromspaced half shells 1, 2. A lining 5 is placed on form 3. The lining maybe constituted of leather, textile or any other natural or syntheticmaterial, and the lining has a shape to fit the contour of form 3.

The form 3 with the lining 5 thereon is placed into lower half shell 2,and the flange 6 of the latter applies the free end of edge portion 7against form 3 while the loose edge portion 8 overlaps flange 6 wherebythe flange is interposed between edge portions 7 and 8.

The upper half shell 1 is then moved to a closed position in which it isin abutment with lower half shell 2. In this operation, the lateralinside rim walls 10 of the upper half shell 1 apply the free end of edgeportion 8 against the outer surface of flange 6. The flange 6 is curvedsuch that its inner surface forms a space with edge portion 7 except atthe free end thereof where it is in contact, and the inner surface offlange 6 blends smoothly with the inner surface of shell 2. The outersurface of flange 6 forms a space with the inner surface of shell 1except at the base of the flange where it is in contact with rim walls10 of the inner surface of shell 1. The closing of the mold is completedby the sole block 11 which has, optionally, been previously placedbetween the two half shells. The block 11 defines a space with form 3which is continuous with the spaces formed by the half shells and form3.

Into the mold thus assembled and closed a suitable casting material 9 isinjected which may be any suitable elastomer, plastomer or mixturethereof. The material 9 fills the space between lining 5 and half shells1, 2 and block 11 whereby a shoe is formed. The mold is opened and theshoe is removed therefrom after which the necessary accessories for theshoe are affixed thereto.

Numerous variations and modifications of the disclosed invention willbecome apparent without departing from the scope and spirit thereof. Forexample, the shoe material may be die-cast. Also, the flange 6 may bepositioned on the upper half shell 1 instead of the lower shell 2.

It is seen that a mold has been provided by which a shoe with a liningcan be cast with flap portions which can be overlapped an secured toclose the shoe, by separating and isolating the overlapped edge portions7 and 8 of the lining by means of flange 6 while permitting the injectedmaterial to be cast on these edge portions to form said flap portions.The mold is thus characterized by the flange 6 which is inserted betweenthe edge portions 7, 8 to separate and isolate the same while holdingthe edge portions against respective surfaces of the mold such that thematerial can be cast on the outer surfaces of the edge portions.

I claim:

1. A mold for casting a shoe which is to have flap portions which can beoverlapped and secured to close the shoe, said mold comprising anopenable and closable mold body including an inner form and a pair ofouter shells surrounding said inner form to define therewith a space forintroduction of casting material to form a shoe, and means on at leastone of said shells entering into said space and defining overlappedseparated regions in said space for forming free flap portions on theshoe which can be overlapped in closed position or separated in openposition.

2. A mold as claimed in claim 1, wherein said means comprises a flangeon one shell projecting into said space and having opposite surfaces oneof which faces the form member While the other faces the other shell.

3. A mold as claimed in claim 2, wherein said flange has a curvedoutline and a free edge which contacts said form member while forming aspace with the remainder of said form member, said shell member on whichthe flange is located having a surface facing the form member whichsmoothly blends with the surface of the flange facing said form member.

4. A mold as claimed in claim '3, wherein said flange has a baseportion, and said other surface of the flange at said base portion inthe closed position of the mold body contacts the other shell memberWhile the remainder of said other surface of the flange is spaced fromsaid other shell member to form a space between the remainder of saidother shell member.

5. A mold as claimed in claim 4, wherein said mold body comprises a soleblock facing said form member in spaced relation therewith in the closedposition of the mold body to define a space around said form memberwhich is continuous with the space between said form member and theshell members.

6. A mold as claimed in claim 5, wherein said shell members surround theform member in the region of the upper of the shoe and have an abuttingsurface substantially centrally located with respect to said upper, saidflange being located on said one shell member at said abutting surface.

7. A mold as claimed in claim 1, wherein said mold is adapted to supporta lining having a cut out and free edge portions bounding the cut-outfor casting the lining integrally with the casting material, said meanssupporting said edge portions in separated and isolated, overlappedrelation in the closed position of the mold.

8. A mold as claimed in claim 7, wherein said means comprises a flange'which is inserted between said edge portions of the lining and holdssaid edge portions against respective surfaces of the mold body.

9. A mold as claimed in claim 8, wherein said form member supports thelining while said shells enclose the form member and define a spacetherewith in which the casting material is introduced to be molded onthe lining.

10. A mold as claimed in claim 9, wherein said flange is located on oneof said shell members and has opposite surfaces, one of which faces theedge portion of the lining on the form member while the other edgeportion of the lining rests on the other surface of the flange.

References Cited UNITED STATES PATENTS 2,114,708 4/1938 Gash 18422,357,360 9/1944 Rollman 1842 X 2,470,089 5/1949 Booth 1842 X 3,067,46712/1962 Yamush. 3,444,591 5/1969 Becka et a1. 1842 J. HOWARD FLINT, JR.,Primary Examiner US. Cl. X.R.

